In a bowl, mix together flour, salt, and vegetable oil. Gradually add water until a soft dough forms. Cover the dough with a wet paper towel or cloth and aside to rest for 15-20 minutes.
Lightly flour work surface. Pinch off golf ball sized pieces of dough, and roll out until thin and circular (approximately 20 centimeters in diameter).
Heat a frying pan on medium high heat. Place chapathi in pan, and cook until slightly puffed on first side (one minute). Then flip over and cook for an additional 30-45 seconds, or until you can see brown spots form on the other side.
Remove from pan, and enjoy warm with your favourite curry :)